A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 5975-01-627-3093
NSN 5835-00-034-4976
NSN 5905-00-934-3170
NSN 6650-01-154-1870
NSN 6645-00-609-7214
NSN 5895-01-597-7026
NSN 6135-00-577-8429
NSN 4140-01-501-6031
NSN 5975-01-421-3355
NSN 2925-00-536-4574
NSN 5945-01-081-6402
NSN 6130-00-874-1109